Hi,
The attached patch adds support for $…$ latex fragments followed by a
dash, such as $n$-th.
This pattern is quite common, and the issue was mentionned by Rudolf
Adamkovič, here: https://list.orgmode.org/m2mtjvefrf....@me.com/.
This extension of the syntax doesn't conflict with the use of $'s in
table formulas, or for currency, AFAICT.
Regards,
--
Sébastien Miquel
From b023fff129a5cc3b1f12b9f170f2e018dc34d237 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Miquel?= <sebastien.miq...@posteo.eu>
Date: Sun, 23 Jan 2022 13:28:03 +0100
Subject: [PATCH] =?UTF-8?q?org-element:=20Support=20$=E2=80=A6$=20LaTeX=20?=
=?UTF-8?q?fragments=20followed=20by=20a=20dash?=
MIME-Version: 1.0
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* lisp/org-element.el (org-element-latex-fragment-parser):
* lisp/org.el (org-latex-regexps): Allow a dash right after a
$…$ fragment.
* testing/lisp/test-org-element.el (test-org-element/latex-fragment-parser):
Add test.
Allows such uses as `$n$-th' or `$n$-dimensional'.
---
lisp/org-element.el | 2 +-
lisp/org.el | 4 ++--
testing/lisp/test-org-element.el | 4 ++++
3 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/lisp/org-element.el b/lisp/org-element.el
index b82475a14..40a604578 100644
--- a/lisp/org-element.el
+++ b/lisp/org-element.el
@@ -3416,7 +3416,7 @@ Assume point is at the beginning of the LaTeX fragment."
(not (memq (char-before (match-beginning 0))
'(?\s ?\t ?\n ?, ?.)))
(looking-at-p
- "\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|'\\|$\\)")
+ "\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|'\\|-\\|$\\)")
(point)))))
(post-blank
(if (not after-fragment) (throw 'no-object nil)
diff --git a/lisp/org.el b/lisp/org.el
index 2d439cd05..3a164ee77 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -629,8 +629,8 @@ An entry can be toggled between COMMENT and normal with
'(("begin" "^[ \t]*\\(\\\\begin{\\([a-zA-Z0-9\\*]+\\)[^\000]+?\\\\end{\\2}\\)" 1 t)
;; ("$" "\\([ \t(]\\|^\\)\\(\\(\\([$]\\)\\([^ \t\n,.$].*?\\(\n.*?\\)\\{0,5\\}[^ \t\n,.$]\\)\\4\\)\\)\\([ \t.,?;:'\")]\\|$\\)" 2 nil)
;; \000 in the following regex is needed for org-inside-LaTeX-fragment-p
- ("$1" "\\([^$]\\|^\\)\\(\\$[^ \t\r\n,;.$]\\$\\)\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|\000\\|'\\|$\\)" 2 nil)
- ("$" "\\([^$]\\|^\\)\\(\\(\\$\\([^ \t\n,;.$][^$\n\r]*?\\(\n[^$\n\r]*?\\)\\{0,2\\}[^ \t\n,.$]\\)\\$\\)\\)\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|\000\\|'\\|$\\)" 2 nil)
+ ("$1" "\\([^$]\\|^\\)\\(\\$[^ \t\r\n,;.$]\\$\\)\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|\000\\|'\\|-\\|$\\)" 2 nil)
+ ("$" "\\([^$]\\|^\\)\\(\\(\\$\\([^ \t\n,;.$][^$\n\r]*?\\(\n[^$\n\r]*?\\)\\{0,2\\}[^ \t\n,.$]\\)\\$\\)\\)\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|\000\\|'\\|-\\|$\\)" 2 nil)
("\\(" "\\\\([^\000]*?\\\\)" 0 nil)
("\\[" "\\\\\\[[^\000]*?\\\\\\]" 0 nil)
("$$" "\\$\\$[^\000]*?\\$\\$" 0 nil))
diff --git a/testing/lisp/test-org-element.el b/testing/lisp/test-org-element.el
index 6d7376a96..2055e3a7b 100644
--- a/testing/lisp/test-org-element.el
+++ b/testing/lisp/test-org-element.el
@@ -1776,6 +1776,10 @@ e^{i\\pi}+1=0
(eq 'latex-fragment
(org-test-with-temp-text "$a$'"
(org-element-type (org-element-context)))))
+ (should
+ (eq 'latex-fragment
+ (org-test-with-temp-text "$a$-"
+ (org-element-type (org-element-context)))))
;; Test forbidden characters inside $...$.
(should-not
(eq 'latex-fragment
--
2.34.1
